.container{
    width: 100%;
    height: 40px;
    background-color: pink;
}
.container .navbar{
    display: none;
}

.container .menu{
    float: right;
}

.container .menushow{
    position: fixed;
    right: 0;
    width: 80%;
    height: 100%;
    background-color: blanchedalmond;
}